Pith Number

pith:XKD2JV3Z

pith:2007:XKD2JV3ZKCINYYGSC3MHKMXFHY

not attested not anchored not stored refs pending

XMM-Newton observations of the Galactic globular clusters NGC 2808 and NGC 4372

D. Barret, M. Servillat, N. A. Webb

arxiv:0712.0690 v2 · 2007-12-05 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XKD2JV3ZKCINYYGSC3MHKMXFHY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T17:07:06.468802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba87a4d7795090dc60d216d87532e53e12304bd245243c3fc5994848ffd11032

Aliases

arxiv: 0712.0690 · arxiv_version: 0712.0690v2 · doi: 10.48550/arxiv.0712.0690 · pith_short_12: XKD2JV3ZKCIN · pith_short_16: XKD2JV3ZKCINYYGS · pith_short_8: XKD2JV3Z

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XKD2JV3ZKCINYYGSC3MHKMXFHY \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ba87a4d7795090dc60d216d87532e53e12304bd245243c3fc5994848ffd11032

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d6755f40c7939c4a2d784991613dba7ea9fb00ae6080a704b442feddca77143",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-12-05T10:53:55Z",
    "title_canon_sha256": "4b150b3b49c1b280a01ef8581a4471633d911eb6528944bdae881396fd375a8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0712.0690",
    "kind": "arxiv",
    "version": 2
  }
}